Solid-Liquid Leaching & Extraction Plant Manufacturers
Mathesis Engineers Leaching & Extraction Units are custom engineered for dissolving soluble target components from solid raw materials using liquid solvents. Built for high recovery yields, precise temperature control, and efficient solvent recycling.

Solid-Liquid Leaching (Extraction) is a critical unit operation used to extract valuable active ingredients, metals, or oils from solid matrices using organic or aqueous solvents. Mathesis Engineers manufactures batch percolators, agitated leaching tanks, and continuous counter-current extraction systems.
Engineered with steam jackets, agitation impellers, false bottom filter strainers, and integrated solvent distillation evaporators, our extraction units maximize yield while ensuring complete solvent recovery.
Solid feed material is charged into the extraction vessel equipped with a perforated false bottom plate. Hot solvent is introduced and recirculated through the bed of solid material.
Solvent dissolves soluble active compounds from the solid mass. The extract (miscella) is filtered through the bottom strainer and pumped to a concentration evaporator where solvent is distilled off and recycled, leaving concentrated pure product extract.
High Solute Extraction Yield
Multi-stage cross-current or counter-current washing maximizes recovery of valuable target compounds.
Integrated Solvent Recovery
Connects directly with condensers and evaporators to achieve > 98% closed-loop solvent recycling.
cGMP Hygienic Construction
Sanitary SS316L construction with mirror-polished surfaces for herbal and pharmaceutical extraction.
Explosion-Proof Safety Design
Flameproof motors, nitrogen purging, and pressure relief systems for safe handling of volatile solvents.
- Extraction of active botanical compounds, herbal extracts, and essential oils.
- Hydrometallurgical leaching of valuable metals (Copper, Nickel, Cobalt, Gold) from mineral ores.
- Spice oleoresin and natural food color extraction.
- Washing and leaching impurities from synthetic chemical cakes.
44+ Years of Engineering Experience
With over four decades of experience, Mathesis Engineers specializes in the design, engineering, fabrication, and commissioning of customized process equipment for diverse process industries.
Customized Engineering Solutions
Every Leaching & Extraction Units is engineered based on customer process parameters, operating conditions, material requirements, and project specifications.
Complete Mechanical Design
Our engineering team develops complete mechanical designs supported by practical manufacturing expertise and chemical engineering understanding.
Quality Manufacturing & Inspection
Equipment is fabricated under controlled manufacturing practices with third-party inspection whenever specified, ensuring compliance with ASME, IS, and international standards.
Comprehensive Project Support
From process engineering and fabrication to testing and commissioning support, we deliver customized process equipment solutions designed to meet customer requirements.
